Blaupunkt Monterey SQR22 dead or not?

[MathieuD]

Hi,

This is my first post on Pelican, even if I am reading yours since months.
I bought my first Porsche in November last year: a 911 sc 1983 with a freshly rebuilt
engine. I have done only 500 miles, due to the snow in Minnesota!!
Foking forward for spring.
Relating to the tittle, the car came with a Blauplunkt Monterey SQR22.
The stereo is not working when connected in the car. I wanted to make sure that it is dead before moving forward.
Do you have any idea for connection a an external battery to check whether it works.
Apparently, connections have to be right otherwise it can damage the stereo. Might be already the case: The stereo has been repaired in 1989 in Chicago... Might be dead already...Anyway, Since it is stock, just want to make sure.

Thank you for your ideas, comments.

Mat

[porschenut]

Any 12 volt power source can be used to test it. You can get one at Radio Shack, or buy one on Amazon.

[porwolf]

You could take the battery out as a power source. This hook-up should be safe:



That is the way it is outlined on the radio sticker:



Do hook up a couple of speakers. It's safer that way so you don't blow up the last amplifier stage.

[MathieuD]

Thank Porwolf,

I was not sure for the connexion, and also
I tried, directly from the battery, and nothing
So I think my stock blaupunkt is dead. My last change would be to change the small fuse at the back. If it is 30 years old, that could be that...

[porwolf]

Originally Posted by MathieuD

Thank Porwolf,

I was not sure for the connexion, and also
I tried, directly from the battery, and nothing
So I think my stock blaupunkt is dead. My last change would be to change the small fuse at the back. If it is 30 years old, that could be that...

Yes, I would try that next. Then, of course, if you have some basic practice in electronics and a simple volt meter you could open the radio and try to follow the 12 Volt line. With old radios it is likely that the big capacitors between 12 Volt and ground are shot or shorted out. They could easily be replaced. Some times the power-on switch is a problem. With the radio open you could just bridge it and see what happens and whether you hear anything out of the speakers. If the radio is out of the car you also need to hook up a 3 foot wire to the antenna center pin otherwise nothing will come out of the speakers. The cassette mechanism maybe another problem all together. But the rubber belts, almost certainly shot, can still be gotten. And the tape transport mechanism probably needs tender loving care, cleaning and new lubrication. It is all doable but it does take patience.

[chris steineger]

Mathieu,

By chance is the Blaupunkt still available ? I have an '823 911 with no radio. Even if it doesnt work, yours would beat any empty hole in the dash.

Chris
Kansas City
913-269-3722

[pors1968]

Did you check the fuse on back small door near that phillip screw.

[bfunke]

My thought also - check the fuse.